Determination device

Abstract

[Object] It is an object to provide a determination device capable of determining the health risk of a laborer due to the labor load from the measured biological information only by measuring the biological information including the heart rate of the laborer.[Solution to the problems] In order to solve the above problems, the determination device 1 according to the present invention includes a biological information acquisition unit 3 that acquires biological information including a heart rate of a laborer Wi, a model formula storage unit 4 that stores a model formula for discriminating a health risk due to a labor load based on the biological information, and a determination unit 5 that determines the health risk of the laborer Wi based on the biological information of the laborer Wi and the model formula stored in the model formula storage unit 4.

The invention claimed is: 
     
       1. A device for determining health risk of a laborer comprising:
 a wearable device, configured to be worn on the laborer's body, the wearable device having a heart rate sensor, an acceleration sensor, and a communication unit;
 the heart rate sensor configured to obtain heart rate information corresponding to a heart rate of the laborer; 
 the acceleration sensor configured to obtain acceleration information corresponding to movement of the laborer; 
 the communication unit configured to communicate the heart rate information and the acceleration information wirelessly; and 
 
 a determination device, remote from the wearable device, configured to receive the heart rate information and the acceleration information wirelessly from the communication unit of the wearable device, the determination device having a biological information acquisition unit and a determination unit;
 the biological information acquisition unit configured to acquire biological information including the heart rate information from the heart rate sensor and the acceleration information from the acceleration sensor, and determine an amount of physical activity of the laborer based on the acceleration information acquired during a time period; and 
 the determination unit configured to determine the health risk of the laborer based on the biological information of the laborer provided by the biological information acquisition unit, the determination unit performing processor-executed steps of: 
 determining an at-rest heart rate of the laborer based on the biological information; 
 determining a maximum heart rate of the laborer based on the biological information; 
 determining a current heart rate of the laborer based on the biological information; 
 determining, with a first model formula, a reserve heart rate of the laborer based on the at-rest heart rate, the maximum heart rate, and the current heart rate; and 
 providing a warning indication corresponding to the health risk of the laborer; 
 wherein the laborer is a first laborer of a plurality of laborers; 
 wherein the determination unit is further configured to determine and store sample data corresponding to each of the plurality of laborers, the sample data including, for each of the plurality of laborers, the heart rate information and the amount of physical activity, and the reserve heart rate using the first model formula; and 
 wherein providing the warning indication corresponding to the health risk of the first laborer further comprises: 
 using logistic regression of the sample data to calculate a second model formula with the heart rate information and the amount of physical activity as explanatory variables: and 
 providing the warning indication corresponding to the health risk based on a result of the second model formula, 
 wherein providing the warning indication corresponding to the health risk of the first laborer further comprises providing the warning indication based on the reserve heart rate of the first laborer from the first model formula even though the result of the second model formula does not indicate a health risk. 
 
 
     
     
       2. The device according to  claim 1 , wherein, in providing the warning indication, the warning indication is communicated to the first laborer via a component carried by the wearable device. 
     
     
       3. The device according to  claim 1 , wherein:
 the wearable device is a first wearable device associated with the first laborer; and 
 the device further comprises a plurality of wearable devices, each of which is associated with a corresponding one of the plurality of laborers. 
 
     
     
       4. The device according to  claim 3 , wherein each of the plurality of wearable devices is configured as a shirt. 
     
     
       5. The device according to  claim 4 , wherein each of the plurality of wearable devices communicates with the determination device. 
     
     
       6. The device according to  claim 1 , wherein:
 the wearable device is configured as a shirt; and 
 the heart rate sensor has a first electrode and a second electrode. 
 
     
     
       7. The device according to  claim 1 , wherein:
 the device further comprises a plurality of wearable devices, each of which is associated with a corresponding one of the plurality of laborers; 
 each of the plurality of wearable devices is configured as a shirt; and 
 each of the plurality of wearable devices communicates with the determination device. 
 
     
     
       8. The device according to  claim 1 , wherein the first model formula is represented by the equation:
   reserve heart rate=(current heart rate−at-rest heart rate)/(maximum heart rate−at-rest heart rate).
 
 
     
     
       9. The device according to  claim 1 , wherein the sample data includes at-rest heart rate data and maximum heart rate data pre-measured for the plurality of laborers.